package com.example.demo.config;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Qualifier;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
import org.springframework.boot.context.event.ApplicationReadyEvent;
import org.springframework.boot.context.properties.EnableConfigurationProperties;
import org.springframework.context.ApplicationEvent;
import org.springframework.context.ApplicationListener;
import org.springframework.context.annotation.Bean;
import org.springframework.context.event.ApplicationEventMulticaster;
import org.springframework.context.event.SimpleApplicationEventMulticaster;
import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.core.env.Environment;
import org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor;
import org.springframework.stereotype.Component;
import sun.plugin.util.EventMulticaster;

import java.util.concurrent.Executor;


@EnableConfigurationProperties(CustomProperties.class)
public class Lab2AutoConfig {

    @Bean
    @ConditionalOnProperty(prefix = "sai.auto",name = "enable",havingValue = "true")
    CommandLineRunner createCustomCommandLineRunner(Environment env){
        return new CustomCommandLineRunner(env);
    }


    @Bean(AbstractApplicationContext.APPLICATION_EVENT_MULTICASTER_BEAN_NAME)
    ApplicationEventMulticaster myApplicationEventMulticaster(@Qualifier("taskExecutor") Executor executor){
        SimpleApplicationEventMulticaster eventMulticaster = new SimpleApplicationEventMulticaster();
        eventMulticaster.setTaskExecutor(executor);
        return eventMulticaster;
    }
    /**
     * 自定义事件
     * */
    public static class NoticeEvent extends ApplicationEvent {
        private  static final Logger logger= LoggerFactory.getLogger(NoticeEvent.class);
        /**
         * 存储信息
         * */
        private final String message;

        public NoticeEvent(String message){
            super(message);
            this.message=message;
            logger.info("事件添加成功！message:{}",message);
        }
        public String getMessage(){
            return message;
        }
    }

    /**
     * 自定义事件监听器，监听{@link NoticeEvent}事件。
     */
    @Component
    static class NoticeListener implements ApplicationListener<NoticeEvent> {
        private static final Logger logger = LoggerFactory.getLogger(NoticeListener.class);

        @Override
        public void onApplicationEvent(NoticeEvent noticeEvent) {
            logger.info("事件监听器获取到NoticeEvent，睡眠当前线程2秒...");
            try {
                Thread.sleep(2000);
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
            logger.info("NoticeEvent的message属性是：{}",noticeEvent.getMessage());
        }
    }

    /**
     * 自定义ApplicationReadyEvent的事件监听器
     */
    @Component
    static class ApplicationEventListener implements ApplicationListener<ApplicationReadyEvent>{
        private static final Logger logger = LoggerFactory.getLogger(ApplicationListener.class);
        @Override
        public void onApplicationEvent(ApplicationReadyEvent applicationReadyEvent) {
            logger.info("事件监听器获取到ApplicationReadyEvent，睡眠当前线程3秒...");
        }
    }
}
